This tests rrdpgs in a 3x3 network.  Make sure the number of colums is
set to 3.

  $ build/pc/main.exe -b=0 -l=1 9

Inject out_border.ma into node 0.  It will clone itself onto every node around
the perimeter of the network.

Inject rrdpgs.ma into node 4.  It will perform
rrdpgs and fetch each location from the heap, each time popping it off the stack. 